Bitcoin Core 27.1 guide covering Miniscript, RPC, index, GUI, CJDNS peer and build fixes with staged upgrade, validation and rollback controls.
This guide explains Bitcoin Core 27.1 release in plain English. It summarises the important changes, who they affect and what should be checked before an upgrade.
Bitcoin Core 27.1 release: The release includes several platform and dependency build fixes. Custom builders must rerun reproducible-build, compiler and packaging checks rather than substituting upstream claims.
A node operator is checking Bitcoin Core 27.1 release. The release corrects when an index marks itself synchronized after committing. Monitor each configured index through restart and compare its reported status with known query results.
Signing no longer assumes a parsed TapMiniscript is sane. Wallets using descriptors or Miniscript should test malformed and boundary policies as well as ordinary signing.
setmocktime now enforces its maximum value. It is a testing RPC; keep it unavailable on production services and update test harnesses that relied on out-of-range inputs.
The release corrects when an index marks itself synchronized after committing. Monitor each configured index through restart and compare its reported status with known query results.
Creation of an unsigned fee-bump transaction was fixed. Desktop and hardware-wallet workflows should test fee-bump review, export, signing and broadcast end to end.
GetAddedNodeInfo recognises manually added CJDNS peers correctly. Confirm address-network classification and connectivity without treating an added peer as a currently connected peer.
The release includes several platform and dependency build fixes. Custom builders must rerun reproducible-build, compiler and packaging checks rather than substituting upstream claims.
Node operators test the release on a representative non-production system. They check startup, normal operation, failure handling and restart before changing a live node. Connected wallets, monitoring and mining services should also be checked.
Bitcoin Core 27.1 release: The release includes several platform and dependency build fixes. Custom builders must rerun reproducible-build, compiler and packaging checks rather than substituting upstream claims.
Signing no longer assumes a parsed TapMiniscript is sane. Wallets using descriptors or Miniscript should test malformed and boundary policies as well as ordinary signing.
setmocktime now enforces its maximum value. It is a testing RPC. Keep it unavailable on production services and update test harnesses that relied on out-of-range inputs.
The release corrects when an index marks itself synchronized after committing. Monitor each configured index through restart and compare its reported status with known query results.
Bitcoin Core 27.1 concentrates on correctness at several operational edges. A useful upgrade record proves Miniscript signing, RPC limits, indexes, fee-bump handling and peer classification on the organisation’s real configuration.
Check the current specification status and the documentation for the exact implementation you operate before moving production funds or changing a mining node.
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